#!/usr/bin/env bash

# !!!!!!!!!!!!!!!!!!!!!!!!
# JUST TEMPLATE
# !!!!!!!!!!!!!!!!!!!!!!!!

# https://betterdev.blog/minimal-safe-bash-script-template/
# https://medium.com/better-programming/my-minimal-safe-bash-script-template-300759114040
# https://github.com/koalaman/shellcheck

echo "Just tempalte. Change it to by your requirements"
exit 10

set -E -o errexit -o nounset -o pipefail
trap cleanup SIGINT SIGTERM ERR EXIT

readonly SCRIPT_NAME=$(basename "${BASH_SOURCE[0]}")
readonly SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
readonly ERROR_CODE=90

function usage() {
  cat <<-EOT
Usage: ${SCRIPT_NAME} [-h | --help] [-a <ARG>] [--abc <ARG>] [-f | --flag]
DESCRIPTION
    Your description here.
OPTIONS:
-h, --help
        Print this help and exit.
-f, --flag
        Description for flag option.
-a
        Description for the -a option.
--abc
        Description for the --abc option.
EOT
}

function cleanup() {
  trap - SIGINT SIGTERM ERR EXIT
  # script cleanup here
}

function msg() {
  echo >&2 -e "${1-}"
}

function die() {
  local msg="$1"
  local code="${2:-$ERROR_CODE}"
  echo "$msg" >&2
  exit "$code"
}

function parse_params() {
  local EXTRA_ARGS=()

  for ARG in "$@"; do
    case "$ARG" in
      --abc)
        abc_option_flag=1
        shift
        readonly abc_arg="$1"
        shift
        ;;

      -a)
        a_option_flag=1
        shift
        readonly a_arg="$1"
        shift
        ;;

      --help | -h)
        usage
        exit 0
        shift
        ;;

      --flag | -f)
        flag_option_flag=1
        shift
        ;;

      --)
        shift
        break
        ;;

      *)
        EXTRA_ARGS+=("$ARG")
        ;;

    esac
  done

  # join EXTRA_ARGS a ARGS
}

# MAIN

a_option_flag=0
abc_option_flag=0
flag_option_flag=0

parse_params "$@"

if ((flag_option_flag)); then
    echo "flag option set"
fi

if ((abc_option_flag)); then            # Check if the flag options are set or ON:
    # Logic for when --abc is set.
    # "${abc_arg}" should also be set.
    echo "Using --abc option -> arg: [${abc_arg}]"
fi

if ((a_option_flag)); then
    # Logic for when -a is set.
    # "${a_arg}" should also be set.
    echo "Using -a option -> arg: [${a_arg}]"
fi